East Stump Lake
Nelson County, WisconsinEutrophic
East Stump Lake is a productive, nutrient-rich eutrophic lake in Nelson County, ND. Water quality is graded D based on 2 sampling years through 2025. Compared to the 8 other monitored lakes in Nelson County, East Stump Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2025-10-13. Grade methodology: LakeGrade methodology.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Moderate clarity, visible to about 8.5 ft. Chlorophyll-a: 75.3 µg/L. Trophic State Index: 60.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8.5 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 75.3 µg/L | F |
| Trophic State Index (TSI) | 60 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #4 of 9 lakes in Nelson County
Cleaner Lakes Within 30 Miles
East Stump Lake holds Grade D. 2 nearby lakes hold higher grades.
- CRed Willow LakeGriggs County · 15.4 mi · Higher grade (D → C)
- CEast Devils LakeRamsey County · 14.4 mi · Higher grade (D → C)
Nearby Lakes in Nelson County
More Wisconsin Lake Rankings
Other Grade D Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-10-13
Monitoring stations: 1